Measles outbreaks in the United States are mostly due to index infections occurring in returning U.S. travelers. In a study of travelers presenting to U.S. pretravel clinics, the authors assessed why those eligible for measles vaccination were not offered it or why they refused it.

Several trials indicate that yoga is an effective treatment for chronic low back pain. This trial compared yoga with a standardized program of physical therapy and education in a group of low-income, racially diverse patients with chronic low back pain symptoms.

Interpreting observed differences between hemoglobin A1c (HbA1c) values in black and white patients may have implications for population health and the care of individual patients. This study used continuous glucose monitoring to assess whether higher HbA1c levels among black patients reflects worse glycemic control or biological differences in the glycation of hemoglobin.

This meta-analysis of 11 trials compares implantable cardioverter-defibrillator therapy with conventional care for primary prevention of death from various causes in adults with ischemic or nonischemic cardiomyopathy.

Chinese herbal medicine (CHM) formulas are the major components of traditional Chinese medicine (TCM) interventions. A group of TCM clinical experts, methodologists, epidemiologists, and editors has developed this CONSORT Extension for CHM Formulas (CONSORT-CHM Formulas 2017). Readers will also find Chinese translations of the Extension published at Annals.org.

Ideas and Opinions

This commentary discusses how the design of the Medicare Access and CHIP Reauthorization Act of 2015 (MACRA) will result in unintended consequences and incentives that will increase health care disparities without reducing costs.

This commentary discusses the limited clinical utility of 23andMe's direct-to-consumer (DTC) genetic test and raises concerns that its approval creates a pathway that could lead to expansive DTC genetic testing of similarly low clinical utility that the public will misunderstand and misuse.

Editorials

The editorialists discuss Hyle and colleagues' findings on measles immunization in overseas travelers and note that efforts to increase rates are mainly focused on children and that the need to immunize unvaccinated travelers is overlooked.

Saper and colleagues' trial examined whether yoga is noninferior to physical therapy for treating patients with low back pain. The editorialists discuss the findings and highlight the importance of recognizing the varying pathophysiology of low back pain when studying the effectiveness of interventions.

Bergenstal and colleagues' study contributes to our understanding of racial differences in HbA1c. The editorialists discuss the findings, explain why they do not suggest limited utility of HbA1c in blacks, and call for studies that enable better understanding of populations that may be prone to discordant HbA1c and glucose measures.